Publication: Epoxy-based composite adhesives with improved lap shear strengths at high temperatures for steel-steel bonded joints
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
218995
Other identifier(s)
2-s2.0-85084481711
Rights
Srinakharinwirot University
Rights Holder(s)
Scopus
Bibliographic Citation
Journal of Applied Polymer Science. Vol 137, No.44 (2020)
Suggested Citation
Chailee O., Parnklang T., Mora P., Pothisiri T., Jubsilp C., Rimdusit S. Epoxy-based composite adhesives with improved lap shear strengths at high temperatures for steel-steel bonded joints. Journal of Applied Polymer Science. Vol 137, No.44 (2020). doi:10.1002/app.49371 Retrieved from: https://hdl.handle.net/20.500.14740/5693
Abstract
High-performance room temperature-cure epoxy structural adhesives utilizing simplified formulation are developed. The developed structural adhesive consists of diglycidyl ether of bisphenol A (DGEBA) and novolac epoxy blend as a base resin, micrometer-sized silica particles as a reinforcing filler, and triethylenetetramine as a curing agent. The developed ambient temperature-cure epoxy structural adhesive with optimized formulation exhibits outstanding properties including high glass transition temperature of 95°C, high thermal stability with degradation temperature at 5% weight loss of 364°C, exceptionally high rubbery plateau modulus of 320 MPa, good flame-retardant characteristics with limiting oxygen index of 40, and high single lap shear strength for single lap steel-steel bonded joint of 548 MPa at the temperature of 80°C. The silica-filled DGEBA/novolac epoxy composite adhesive is a potential candidate for applying as a structural adhesive for construction with long-term durability. © 2020 Wiley Periodicals, Inc.
Subject(s)
Adhesive joints
Adhesives
Curing
Filled polymers
Glass transition
Phenolic resins
Silica
Temperature
Degradation temperatures
Diglycidyl ether of bisphenol-A
High thermal stability
High-glass transition temperatures
Limiting Oxygen Index
Long term durability
Rubbery plateau modulus
Triethylenetetramine
Epoxy resins
Adhesives
Curing
Filled polymers
Glass transition
Phenolic resins
Silica
Temperature
Degradation temperatures
Diglycidyl ether of bisphenol-A
High thermal stability
High-glass transition temperatures
Limiting Oxygen Index
Long term durability
Rubbery plateau modulus
Triethylenetetramine
Epoxy resins